What are the main uses of trimellitic anhydride?

Trimellitic anhydride is a multi-purpose organic chemical raw material, and its main application areas include:

Polyvinyl chloride plasticizer. Trimellitic anhydride is a key raw material for the production of polyvinyl chloride plasticizers (such as dioctyl trimellitate), which is used to improve the heat resistance, cold resistance, solvent resistance and electrical insulation properties of polyvinyl chloride.

Epoxy resin curing agent. Used to promote the curing process of epoxy resin and improve its performance.

Heat-resistant insulating materials. Used to make high-temperature resistant insulating varnishes and insulating laminates, such as wire enamels, dipping varnishes, etc. These materials are mainly used for motor insulation.

Powder coatings. Trimellitic anhydride is also used to produce powder coatings, which are widely used in home appliances, automobiles, machinery and other fields.

Other applications. It also includes the use of heat-resistant and oil-resistant polyacids to prepare high-performance polymers such as polyamide-imide and polyesterimide, which are mainly used in electrical components, mold plastic parts, etc. in high-temperature environments.

In addition, trimellitic anhydride is also used to make dyes, pigments, surfactants, films and water-soluble coatings.